Dust-guard.



N0. 647,68l. Patented Apr. I7, |900.

-G. F. PRICE.

DUST GUARD.

[Application led July 20, 1899.) (No Modal.)`

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Fries.

PATENT DUST-GUARD.

SPECIFICATION forming part of Letters Patent N o. 647,681, dated April 17', 1900. Application nea my 20.1899. serial No. 724,520. ormoni.)

To @ZZ whom iv' may concern.-

Beit known that I, GEORGE FRANK PRICE, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dust-Guards; and l do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to an improved dustguard for car j ournal-boXes or the like of that class in which the packing material is used to close the rear or inner end of the journal-box and is held yieldingly about the journal.

The invention consists in the matters hereinafter more fully described, and pointed out in the appended claims.

In the drawings, Figure lis a longitudinal vertical section of a car journal-box provided with a device embodying myinvention. Figs. 2 and 3 are front elevations of a dust-guard embodying my invention. Fig. Il is a section taken on line 4 4 of Fig. 3. Fig. 5 is a section taken through the dust-guard at the bottom of the journal-box. V

In the drawings, A indicates a car-wheel journal.

B indicates a journal-box of familiar construction which receives the journal A and is supported thereon in the usual manner. The said journal-box is provided at its inner end with a transverse slide-aperture designed to receive a dust-guard, whereby dust, dirt, or other foreign bodies are prevented from entering the journal-box.

Myimproved dust-guard consists, as herein shown, of a slide C, slightly smaller in its dimensions than the said dust-guard aperture in which it is adapted to be inserted. The said slide is provided upon its margins with a relatively-broad strip of packing material c, such as felt or other suitable material, which is compressed by being inserted into the said slideaperture of the journal-box. The central part of the slide is provided with a circular aperture in order that it may be readily slipped over the journal A. The outer face of the said slide is provided Witha circular recess c2, surrounding the journal-aperture and opening thereinto. As shown, the said recess c2 consists, essentially, of a rabbeted groove surrounding the said journal-aperture `concentric therewith. The said slide is also said groove c3 and the recess c2 is located a strip of packing material D, of leather or other suitable material. As clearly shown in Figs. 2 and 3, the said strip of packing material lies with its inner surface against the journal, about which it forms a loop, and the ends thereof lie oppositely extended in the opposite ends of the transverse groove c3. To avoid increasing the thickness where the two ends cross each other, the same may be halved together or both may be somewhat reduced in thickness; butpreferablyan elongated slot d is made near one end of the said packing-strip, and the other end thereof is reduced in thickness and is passed therethrough, as shown in Fig. 4. Spiral springs E E are secured to each of the ends of the said packingstrip D and also to the said slide in such a manner as to produce a constant tension upon the strip. A convenient way of accomplishing this is to insert a spring in each end of the said groove and secure one end of the same to the margin of the slide and the other end thereof to the adjacent extremity of the packing-strip by any decided means. Obviously, inasmuch as the resiliency of the springs is approximately equal and the packing-strip when the car is not moving is held firmly in contact with the journal, when the journal revolves the friction of the said packing-strip against the journal, aided by the resiliency of one of the said springs, causes the packing-strip to draw more to one side than to the other side-in other words, to produce a partial rotation thereof. This movement, though slight in itself, tends to compress the spring on one side and to extend the corresponding spring of the other side. Obviously, owing to the resiliency of the springs, the eect of this is to equalize at all times the frictional effect of the packingstrip upon t-he journal. For the purpose of limiting this slight rotative ef- IOO For the purpose of retaining the packing,-`

strip and springs in proper position a covering-plate C', provided with a journal-aperture, is secured on the face of said slide over said recess and grooves in such manner as to confine the said packing-strips and springs therein.' Thesa'id'covering-plate may Lbe of any desired material. As herein shown, a-thin sheet of metal is use kI claim as my inventionl.. A dust-guard for car journal-boxes com-l prising anapertured slide adapted to `be ini: sertedin a slide-aperture in the journal-boxl and Ihaving an annular recess surrounding the aperture in the slide, a packing-strip in: said recess, means for holding the same yieldingly against the journal and aband of pack-vy Aing material at the `margins of the slide and thejournal-box.

!2."A car journal-box having a dust-guard aperture, an apertured slide adapted to he inserted therein, and an annular recess suradapted to be compressed when inserted 'into rounding the aperture in said slide, a packing-istrip in said recess a band of packing material at the margins o f the slide, adapted to :be compressed `when inserted in the .journalbox and means'acting to hold the packingstlripin yielding contact With thejournal cornprising av spring securedto the slide and "to A car journal-box having a dust-guard aperture, an apertured slide provided on its inarginsvvith a packin g-rin g and adaptedto be inserted in said aperture, onev face of the slide Y pcsitely extended in said groove, and ,means for holding the packing strip Vyieldingly against the journal consisting of a spring secured to one of the ends of the packing-strip y journal.

4. 'A dust-guard for car journal-boxes coinact'i'ng "to draw the same closely about the respectively, intoA the said prising a slide adapted to be inserted in the dust-guard aperture of a journal-box, a circularaperture'in said slide ,one-face of said slide being provided with a circular recess surrounding and opening into said circular aperture and with oppositely-extended transverse grooves opening intofsaid recess, a strip of packingmaterial lying in said recess having yielding contact with the journal and provided near one of its ends with a longitudinal slot through Which the other end thereof is passed, said ends lying oppositely extended in saidgrooveg aspiral spring in each groove one end of which is attached to the end of the packing-stripand the other end of which is attached to the slide, and means for limiting the draft of said springs comprising a longitudinalslot in each end o'f'the packing-strip and studs secured in the slide andextending 'into said'slots prising a slide adapted to ybe inserted inthe dust-guard aperture of a journal-box, v and .having'a circular aperture Atherein and provided on one'of itsfaces with a circular recess opening into 'the sfaidcircu'lar aperture, and with oppositelyextending transverse grooves tangent tothe said circular aperture and opening into said recess, a 'strip of packing material in said recess having yielding contact With the journal and provided near one of'its endswith an elongated longitudinal slot, through Which the other end thereof is passed,said ends lyingoppositely extended in said`groo'ves,a`spiral springin each groove having one end'attached to the end of thepackingstrip the otherend thereof being attached to the slide, means for' limiting the draft of said springs comprising alongitudlnal slot in each end of the packing-strip and 'studsl secured in theslide and projectingintolsaidslots and means forcontining the packing-strip in said recess and grooves 'comprising a plate provided with a journal-aperture and secured on the face of said yslide over said recess and grooves.v f

' In testimony that I claim the foregoing as my invention I affix my signature, in presence of two witnesses, this 20th day of June,`A.'D. 1899. v

c. FRANK PRICE.

Witnesses:

CHARLES W. HILLS, TAvLoR'E. BROWN.

IOO 

